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Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Accountant	Paul Henriot	Italy	1 2 3 4 5
2	Accountant	Hanna Moos	France	1 2 3 4 5
3	Accountant	Hanna Moos	Austria	1 2 3 4 5
4	Accountant	Matti Karttunen	Brazil	1 2 3 4 5
5	Sales Associate	Antonio Moreno	Germany	1 2 3 4 5
6	Accounting Manager	Antonio Moreno	Germany	1 2 3 4 5
7	Accounting Manager	Georg Pipps	Germany	1 2 3 4 5
8	Marketing Manager	Matti Karttunen	Bulgaria	1 2 3 4 5
9	Sales Representative	Antonio Moreno	Austria	1 2 3 4 5
10	Accountant	Paul Henriot	Germany	1 2 3 4 5
11	Marketing Assistant	Pascale Cartrain	Italy	1 2 3 4 5
12	Sales Manager	Georg Pipps	England	1 2 3 4 5
13	Accounting Manager	Paul Henriot	Spain	1 2 3 4 5
14	Accounting Manager	Pascale Cartrain	England	1 2 3 4 5
15	Sales Agent	Hanna Moos	Italy	1 2 3 4 5
16	Accountant	Georg Pipps	USA	1 2 3 4 5
17	Marketing Assistant	Howard Snyder	Germany	1 2 3 4 5
18	Accounting Manager	Hanna Moos	England	1 2 3 4 5
19	Sales Agent	Georg Pipps	Italy	1 2 3 4 5
20	Sales Agent	Paul Henriot	Germany	1 2 3 4 5
21	Marketing Manager	Howard Snyder	USA	1 2 3 4 5
22	Marketing Manager	Howard Snyder	Austria	1 2 3 4 5
23	Owner	Georg Pipps	Austria	1 2 3 4 5
24	Accountant	Jaime Yorres	Germany	1 2 3 4 5
25	Sales Associate	Pascale Cartrain	Bulgaria	1 2 3 4 5
26	Sales Agent	Pascale Cartrain	Spain	1 2 3 4 5
27	Accounting Manager	Antonio Moreno	Italy	1 2 3 4 5
28	Sales Agent	Paul Henriot	Argentina	1 2 3 4 5
29	Sales Consultant	Georg Pipps	France	1 2 3 4 5
30	Sales Associate	Hanna Moos	England	1 2 3 4 5
31	Sales Representative	Pascale Cartrain	Austria	1 2 3 4 5
32	Owner	Matti Karttunen	Argentina	1 2 3 4 5
33	Sales Consultant	Matti Karttunen	Argentina	1 2 3 4 5
34	Accountant	Antonio Moreno	Bulgaria	1 2 3 4 5
35	Sales Associate	Elizabeth Lincoln	Austria	1 2 3 4 5
36	Sales Agent	Antonio Moreno	Spain	1 2 3 4 5
37	Accountant	Jaime Yorres	Argentina	1 2 3 4 5
38	Accounting Manager	Howard Snyder	Brazil	1 2 3 4 5
39	Accountant	Jaime Yorres	England	1 2 3 4 5
40	Sales Consultant	Pascale Cartrain	Spain	1 2 3 4 5
41	Marketing Assistant	Georg Pipps	USA	1 2 3 4 5
42	Marketing Assistant	Jaime Yorres	Bulgaria	1 2 3 4 5
43	Sales Associate	Paul Henriot	Brazil	1 2 3 4 5
44	Owner	Jaime Yorres	Brazil	1 2 3 4 5
45	Sales Agent	Elizabeth Lincoln	France	1 2 3 4 5
46	Sales Representative	Elizabeth Lincoln	USA	1 2 3 4 5
47	Sales Representative	Elizabeth Lincoln	Argentina	1 2 3 4 5
48	Accounting Manager	Patricio Simpson	Germany	1 2 3 4 5
49	Marketing Assistant	Antonio Moreno	Argentina	1 2 3 4 5
50	Accountant	Hanna Moos	France	1 2 3 4 5
51	Owner	Pascale Cartrain	Italy	1 2 3 4 5
52	Sales Associate	Howard Snyder	France	1 2 3 4 5
53	Marketing Assistant	Paul Henriot	Italy	1 2 3 4 5
54	Sales Representative	Georg Pipps	USA	1 2 3 4 5
55	Owner	Antonio Moreno	Italy	1 2 3 4 5
56	Sales Associate	Howard Snyder	Spain	1 2 3 4 5
57	Sales Associate	Pascale Cartrain	Brazil	1 2 3 4 5
58	Marketing Manager	Hanna Moos	England	1 2 3 4 5
59	Marketing Manager	Matti Karttunen	Germany	1 2 3 4 5
60	Sales Consultant	Patricio Simpson	Germany	1 2 3 4 5
61	Marketing Assistant	Antonio Moreno	Italy	1 2 3 4 5
62	Sales Consultant	Patricio Simpson	Germany	1 2 3 4 5
63	Sales Manager	Matti Karttunen	Italy	1 2 3 4 5
64	Sales Manager	Antonio Moreno	Italy	1 2 3 4 5
65	Marketing Assistant	Paul Henriot	USA	1 2 3 4 5
66	Accounting Manager	Pascale Cartrain	Argentina	1 2 3 4 5
67	Accounting Manager	Georg Pipps	Spain	1 2 3 4 5
68	Sales Representative	Jaime Yorres	Argentina	1 2 3 4 5
69	Owner	Matti Karttunen	Bulgaria	1 2 3 4 5
70	Marketing Assistant	Pascale Cartrain	England	1 2 3 4 5
71	Sales Associate	Antonio Moreno	Bulgaria	1 2 3 4 5
72	Accounting Manager	Jaime Yorres	England	1 2 3 4 5
73	Sales Agent	Matti Karttunen	Brazil	1 2 3 4 5
74	Owner	Georg Pipps	France	1 2 3 4 5
75	Marketing Assistant	Patricio Simpson	Brazil	1 2 3 4 5
76	Sales Associate	Georg Pipps	USA	1 2 3 4 5
77	Sales Consultant	Matti Karttunen	England	1 2 3 4 5
78	Sales Associate	Paul Henriot	Germany	1 2 3 4 5
79	Owner	Pascale Cartrain	USA	1 2 3 4 5
80	Accounting Manager	Elizabeth Lincoln	Germany	1 2 3 4 5
81	Marketing Manager	Hanna Moos	Austria	1 2 3 4 5
82	Marketing Assistant	Elizabeth Lincoln	Spain	1 2 3 4 5
83	Accountant	Paul Henriot	Brazil	1 2 3 4 5
84	Owner	Elizabeth Lincoln	Germany	1 2 3 4 5
85	Accountant	Patricio Simpson	Italy	1 2 3 4 5
86	Sales Consultant	Georg Pipps	France	1 2 3 4 5
87	Accountant	Paul Henriot	USA	1 2 3 4 5
88	Sales Associate	Antonio Moreno	England	1 2 3 4 5
89	Marketing Assistant	Pascale Cartrain	USA	1 2 3 4 5
90	Accountant	Pascale Cartrain	Brazil	1 2 3 4 5
91	Sales Consultant	Jaime Yorres	Italy	1 2 3 4 5
92	Sales Representative	Pascale Cartrain	Italy	1 2 3 4 5
93	Owner	Jaime Yorres	Brazil	1 2 3 4 5
94	Accountant	Pascale Cartrain	Germany	1 2 3 4 5
95	Sales Consultant	Matti Karttunen	Germany	1 2 3 4 5
96	Sales Manager	Georg Pipps	Austria	1 2 3 4 5
97	Sales Agent	Matti Karttunen	Brazil	1 2 3 4 5
98	Sales Consultant	Georg Pipps	England	1 2 3 4 5
99	Sales Manager	Antonio Moreno	France	1 2 3 4 5
100	Marketing Assistant	Pascale Cartrain	Spain	1 2 3 4 5


1 2 3 4 5 6 7 8 9 10 ... Item 1 to 1000 of 300000 Page: of 300 Page size:

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Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

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